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If \( \dfrac{x+2}{x(x-4)} = \dfrac{\text{A}}{x} + \dfrac{\text{B}}{x - 4}\), find \( \text{A+B} \)

Mathematics
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I don't get it. Please clarify your solution. Thanks.

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Other answers:

It means I chose one coefficient and multiplied to the denuminator of that and then I put the root on both sides.
For example for finding out A I chose x in the denuminator then multiplied to x and then put x=0 to both sides and got A. For B is the same way.
Is it clearfied?
@geerky42 This is an exercise in partial fractions. Do you remember how to do those?
Sorry, I still don't get it. I mean, why does it work?
yea was gonna ask if it was a calculas problem
Partial fractions? Sorry, don't ring any bells.
So I have to use calculus to solve this problem?
actually nah just cal u have to use thsi to get integral

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